【 Weak current College 】 community water supply and sewerage and water heating, water supply---fourth-saving and swimming pool system

This section describes water works and the swimming pool's water supply and drainage systems, as required by modern property with image landscape and supporting facilities, has been in the property for rent plays an increasing role, and both from design to construction, to put into use in the management, maintenance and more standardized and improved. 　　In learning this section, the requirements on the composition of the water engineering, control and swimming pool water supply, drainage, and so have a preliminary understanding. First, scape project overview application flow of water is in the form, attitude and sound composition of landscaping, decorated with scenes of water. Use of water engineering and manufacturing water features (also called fountain), mid-18th century building has been begun. All shapes and beauty waterscape, modern cities and towns in increasing almost became a city in landscape. With the development of modern electronic technology, has added a new vitality water features, and lighting, landscaping, sculpture and music between clever, constitute a colorful, glories, enchanting scenery, gives rise to fresh environment and poetic like daydream, won the people's wide favorite. Therefore, water has become a town planning, tourism, construction, landscape and large public buildings designed in one of the most important content, also in the modern property plays a decisive role. Water features in addition to the landscape features, you have moist and clean air, improve the role of small scale climate.　　Water engineering tank doubles as a cooling pool, fire water tank, pouring water cistern green space or for recreational swimming and fish ponds, etc. 1. the composition of the water project
Typical water project consists of the following form. ① the civil part, i.e. the water pump housing, water, sewer, drain well and the valve shaft. ② pipeline system, i.e. water pipeline, drainage pipes. ③ landscaping process equipment and devices, that is, with water, various nozzle, lighting and water pumps, etc. 　　④ control devices, valves, electrical control equipment and sound control equipment, etc. 2. water modeling, the basic form and control (1) water modeling
① water-water modeling; ② overland flow of water modeling; ③ stack of pressurised water water modeling; ④ jet of water modeling; ⑤ Chung type of water modeling; ⑥ combined water modeling.

(2) the basic form of water engineering
①-② fixed;; ③ full mobile for mobile.

(3) water engineering control mode
① manual control; ② ③ electric control; sound control (where sound control-specific methods are: the human voice direct control mode, audio music control, direct music sound control, indirect sound control and mixing control method, etc.). 3. water water quantity and water quality (1) water-filled water ① first depends on the size of the volume of water pool. ② circulating water should be equal to the amount of the various nozzle spray. 　　③ supplementary water flow by recycling or water tank volume percentage.　　For hydrostatic landscape, each month you should change the water drained 1 ~ 2 times, to conserve water, mirror pool, Pearl Izumi, hydrostatic landscape or circulating water. (2) water ① double as entertainment swimming, children playing in the water of the water tank, its initial water filling and supplementary feed water should comply with the standards for drinking water, the circulation of water should comply with the artificial swimming pool water sanitation standard law. 　　② not in direct contact with the body of water tank, it can use feedwater, drinking water can also be used under conditions of process water or clean natural water (the water should comply with the drinking water standard of senses index requirements). 4. design process main equipment and devices (1) nozzle
According to landscaping needs common forms are: ① ② suction nozzles; Babcock (water)-Jet; ③ water fog sprinkler; ④ gap nozzle; ⑤ refraction sprayer; ⑥ Rotary-type nozzle. In addition, there are also porous nozzle, spray nozzle and modular sprinkler, dozens of nozzle. (2) pump
Fixed water works often choose horizontal or vertical centrifugal pump and pipeline pump. Of these, half a mobile water engineering use of submersible pumps. It is best to use horizontal submersible pumps, submersible pumps with vertical, you should pay attention to meet the requirements of most water estuary submergence depth; mobile water works, because the cycle of the flow of small, often using micro-pump and pipeline pump. (3) control valve
For electronic and voice-activated water engineering, basic requirements is the ability to timely and accurate control, keep the water forms and electronic control signal and audio signal synchronization, and guarantees long repeated actions not errors, do not fail. Select require electric valve opening and through traffic into a linear relationship as well. With solenoid valve control flow, generally only switch two actions, not by opening different degrees to regulate the flow and only apply to electronically controlled manner and not to the voice mode. (4) exposure lamps
Water engineering in Asahikawa decorated with terrestrial radiation and underwater irradiation in two ways.
① reflection effect better flow pattern, the use of land-based color searchlight lighting. But care should be taken to avoid the direct rays of light to the viewer's eyes.
② transparent water flow patterns (such as jets, water, etc.) with underwater lighting. 　　Commonly used underwater illumination lamps are incandescent lamps and gas discharge lamps.　　Second, the swimming pool water supply and drainage system in the community or the building with swimming pool, only for entertainment and exercise, not for the game. 1. the general standards for indoor swimming pool ① swimming pool size: length 25m (or multiples of 25m); width per lane 2 ~ 2.5m, on both sides of the lane plus 0.25 ~ 0.5m; depth 1.4 ~ 1.8m. ② swimming pool water quality: the need to meet the health standards for drinking water. ③ swimming pool water temperature: 28 ℃ (indoor swimming pool). 　　④ swimming pool at room temperature: 25 ℃ (indoor swimming pool).　　But in practice, community swimming pool are irregular in shape, and to open, this also brings to the management and maintenance. 2. indoor swimming pool of water-supply mode-water way work features direct water method long-term open swimming pool water inlet valve continuously, so that full out swimming pool water automatic overflowSwimming pool water inlet valve can be adjusted so that the inflow per hour is equal to 15% of the volume of a swimming pool, a waste-to-manage water resources and water quality, temperature of the swimming pool is very difficult to guarantee that regularly change the water-supply water of the swimming pool by regularly (usually 1 to 3 days) are all on the net, then flush the pool floor, wall, filled with the water management simple, one-time investment savings, but serious water pollution, water temperature cannot be guaranteed, and change the water when swimming pool you want to stop using the loop filter the water in the swimming pool water law by circulating filtration pump out, after the filter, heater and then returned to the pool, cleaning, disinfection, heating, swimming pool water quality request system is complex, one-time investment, management is complex, because the water of the swimming pool cannot be guaranteed, so use more 3. swimming pool accessories ① water estuary: the inlet valve for the intake, the General is grid-like, has multiple, located at the bottom of the ponds or pools of wall, to ensure uniform distribution of water. Processing of materials for water supply include stainless steel, bronze, marble or engineering plastic, etc. ② to nozzle: cycle back to the swimming pool after processing back to the gate, a grill-like, usually has multiple, located in the pool bottom or overflow channels. To guarantee the uniform and backwater cannot produce short circuit, back in the Shui Hau with circulation pump's suction at arm's length. Back to the nozzle of the same material and water estuary. ③ drain: structure and back to the nozzle, size can be zoomed to drain the uninhibited, General requirements for 4-6 hours to let the water up to 12 hours. Drain outlet located at the bottom of the ponds. ④ overfall orifice: generally in the reeds do overflow trough, overflow slots to guarantee a certain level, the tank evenly arranged back to nozzle or circulation pump inlet. ⑤ outfall: by drains. 　　Start every day at the swimming pool, short-time before using micro-open sewage valve to exhaust the deposited on the bottom, the guarantee will be filled with dirt. 4. the annex to the water circulation system: ① balance water tank made of stainless steel, the installation location to guarantee its water level consistent with the swimming pool level, consists of connecting pipe with swimming pool. Balancing tank have ball valves control the water level. Swimming pool is in use, to the pool of water into the tank through the balance, the swimming pool to ensure its normal level. ② mechanical filters for cleaning the swimming pool water quality:. If swimming pool water for non-drinking water systems, the mechanical filter behind also need to install a set of activated carbon filters, in order to meet the drinking water quality standards. ③ heater: to ensure that the swimming pool water temperature in the heater must be used. Heater generally use gas-to-water heat exchanger, also has a water heater and electric heater. ④ DOSER: in order to guarantee the water sanitation, swimming pool water is filtered and heated, it must be disinfected. Disinfection through DOSER dosing pump automatically kit within NaClO3 solution injection system, together with the water into the swimming pool. Because access to the pool of NaClO3 in use to spread to the air, causing the water to reduce chloride content, so the DOSER must continually injected drugs. 　　Injection flow can be measured pool chlorine content regulation, also have the use of automatic detection and automatic adjustment of the dosing. 5. swimming pool water drainage (1) a shore cleaning
Swimming pools on the shore where sediment, dirt, may be the wave of the water rushed into the pool and water pollution. To prevent this phenomenon, the pool should be equipped with irrigation taps shore, 2 times a day at least flush, flush water should flow to the drains.

(2), sluicing overflow and
① overflow gutter. Used to exclude various reasons overflow swimming pool of water to avoid the overflow of water flow back into the pool into the sediment and other impurities. Overflow pipe and sewer pipe direct connection, and shall water bends, prevent pollution and blocked pipeline; overflow pipe use cast iron pipes, galvanized steel or steel tube painted in epoxy and the other new pipeline.
② discharge port. Used for emptying the pool of water. Discharge port should be the bottom back gate merge settings the lowest end of the swimming pool; drain piping 4 ~ 6h will calculate all pool water emptying tube diameter. If it is difficult to achieve, you shall not exceed 12h. Should give priority to the use of gravity discharge, but should prevent reverse flow of sewage pollution measures. Gravity discharge has difficulty, use pressure discharge, can make use of the circulation pump discharge. Discharge of the same structure and back to the gate.

(3) emissions and sewage cleaning ①. Open every day until the end of the pool of sedimentary in filth. In the opening period, pool floats, suspended solids should always clear. Common sewage method as shown in the following table. Removal of clear methods floating, suspended solids using artificial picking, fishing methods to clear the pool bottom sediments, sewage pipes, mobile sucked, siphon sewage method, artificial drainage II cleaning. Change the water for swimming pool, the pool floor and the wall should be thoroughly cleaning, not any dirt residues, if necessary, the sterilization of liquid cleaning applications. Generally use Brown plates brushing and pressure washing.　　Cleaning water mains or conformity with the standards for drinking water in the other. 6. swimming pool swimming pool water supply and sewerage facilities should be supporting set dressing rooms, toilets, swimming after shower facilities, lounge and library and other auxiliary equipment. These facilities, water supply and sewerage and water supply and drainage.