Water saving technology in the construction water supply and drainage applications

According to the different function of the building can adopt different water-saving measures and technology: in the residential and office buildings should be improved toilet flushing, reducing the amount of rinse water; in hotels, restaurants, should be considered for bath wastewater treatment and reuse.
A 1 reduction in the toilet flushing water
At present, our country uses generally greater than or equal to 11 L flush toilet, large water consumption. If according to the provisions of the Ministry of construction, all use the flush toilet is less than or equal to 9L, residential water-saving 4%, guesthouse, hotel, office building 3% water-saving, water-saving 11%. At present, the United States and Europe has generally use the 6L toilet, if to 2001 our country realize all the toilet flushing water using 6L, residential water-saving 14%, guesthouse, hotel, office building 4% water-saving, water-saving 27%.
2 Kitchen, bath, toilet water saving
The kitchen sink, shower faucet and bathroom lavatory faucet with inflatable water faucet, water saving and reducing the diameter of the column.
The 3 vacuum water-saving technology
In order to guarantee the sanitary ware and sewer flushing effect, the vacuum technology used in drainage engineering, using air instead of bulk water, rely on the vacuum negative pressure generates a high speed gas water mixture, fast sanitary sewage in the dirt suction, clean, saving water, drain away the dirty air effect. A complete set of vacuum drainage system includes: a vacuum valve and a special device of sanitary ware, sealing pipeline, vacuum container, vacuum pump, control equipment and pipeline. Vacuum pump in drainage pipeline generate negative pressure 40 ~ 50kPa, sewage suction to a collection receptacle, and then by the sewage pump will collect the sewage into the municipal sewer. In all types of buildings using vacuum technology, saving more than 40% average. If the office buildings in use, water saving rate can exceed 70%.
4 water treatment
At the Residence, residential and hotel, discharge a large bath and toilet water, should be treated properly for daily life and supplemental cooling water, including toilet flushing, landscape irrigation and road cleaning.
Recommendation of reclaimed water treatment technology for:
Raw water, machinery grille, a hair filter adjustment pool coagulation, filtering, activated carbon adsorption, sterilization, water pump, water pool in the [ in the roof water tank and special water pipe system ( water ) water point]
In the bath water use more than 50% Hotel, Residence, senior residential building, can consider to use water treatment system, in order to satisfy toilet flushing, irrigation and complement component of circulating water cooling water requirements, can save at least 30% of the domestic water use.
Waste water treatment in favor of saving energy and reducing consumption
1 problems of small wastewater treatment station
The investigation of 3 small-sized wastewater treatment station, the design handling capacity are 500m3 / D, but the normal operation of the actual organic load only design capacity of 20% ~ 30%, the hydraulic operation at full load time is only 1 / 4, and were not equipped with variable frequency regulating device," Mara car " the phenomenon exists generally.
The small wastewater treatment station and production synchronization, while the normal production enterprises have two weekly day of rest, so each time you drive a 4 ~ 6 h even longer time normal operation ( biological bacterial activity recovery process ), and causes the waste of energy.
The wastewater treatment effect is quite good, the water depth treatment after their index can reach life miscellaneous water standard, but most do not reuse, resulting in the waste of water resources.
The underground pipe leakage caused by environmental pollution.
The individual enterprises into the pursuit of economic efficiency, steal phenomenon caused by waste water, the pollution of the environment.
2 for small wastewater treatment station energy saving measures
In the wastewater treatment process design should collect relevant production wastewater of first hand data, ensure the design ability and actual running load is adapted, and consideration of computer control system application in wastewater treatment.
The merger of small wastewater treatment station, make centralized wastewater treatment, helps to reduce duplication of investment, avoid the waste of social resources.
The environmental protection departments of the enterprise standards emissions management at the same time, we should set up specialized agencies for the enterprise to provide technical advice, so that the treated water can be fully utilized, while reducing environmental pollution and improving the economic benefits of.
3 centralized wastewater treatment of economic benefit and environmental benefit
Save construction investment. 3 sewage treatment station a total investment of about 3000000 yuan, if the combined investment of about 1500000 yuan, can save half of investment.
The labor saving. A sewage treatment station and at least 5 people, with treatment after a maximum of only 10 people, which is conducive to improve the social benefits, to promote the rational allocation of social labor.
The energy saving effect is obvious. Can make full use of frequency conversion adjusting device and computer control system so that the energy can be fully utilized, can at least more than 50% energy saving.
The promotion of treated water reuse. Throughout the year can reduce wastewater emissions of 30 x 104m3, at the same time, a saving of 30 x 104m3, CODCr emission reductions of 15 t, in order to achieve economic benefits and environmental benefits of double harvest.
Environmental protection departments in the implementation of enterprise supervision and management at the same time, we hope to wastewater treatment facilities to achieve macroscopical adjusting control and give technical guidance, to avoid duplication of investment, reduce waste of social resources and improving the economic benefit and social benefit.