The newly invented "SPR high turbidity sewage purification system" (American invention patent) combines the "primary treatment" and "tertiary treatment" procedures of sewage into one, and puts them into a water tank of the SPR sewage purifier, which can be quickly completed in 30 minutes. It is allowed to directly inhale high-turbidity sewage with suspended matter (turbidity) as high as 500 mg/L to 5000 mg/L, and the suspended matter (turbidity) of treated effluent is lower than 3 mg/L (degree); It is allowed to directly inhale high-concentration organic sewage with CODcr of 200mg/L ~ 800mg/L, and the CODcr of the treated effluent can be reduced to less than 40 mg/L. Only with the engineering investment equivalent to that of conventional primary and secondary sewage treatment plants and the operating cost lower than that of conventional secondary treatment, the effect of tertiary treatment level can be achieved, and the regeneration and reuse of urban sewage can be realized.
SPR sewage treatment system method (1) The SPR sewage treatment system firstly separates the dissolved pollutants from the real solution state by chemical methods to form colloidal particles or tiny suspended particles with solid-phase interfaces;
(2) Selecting efficient and economical adsorbents to separate organic pollutants and chromaticity in sewage; Then all kinds of colloidal particles and suspended particles in sewage are condensed into large and dense flocs by microscopic physical adsorption;
(3) Floccules can be quickly separated from water in the self-designed SPR high turbidity sewage purifier based on the principles of fluid mechanics such as cyclone and filtration hydraulics;
(4) After the clean water is filtered by the self-formed dense suspended mud layer in the tank body, it reaches the tertiary treatment level, and the effluent can be reused;
(5) The sludge is highly concentrated in the concentration chamber and discharged under pressure regularly. Because of its low moisture content and good dewatering performance, sludge can be directly sent to a mechanical dewatering device, and the dewatered mud cake can also be used to make sidewalk tiles, thus avoiding secondary pollution.
The newly invented SPR sewage purification technology has the advantages of simple and reliable process, low investment and operation cost, less land occupation and good purification effect, which will open up a new way for the reuse of urban sewage in the world today. After the reuse of urban sewage, it provides a second fresh water source for the city and an indispensable condition for the sustainable development of the city, and its economic and social benefits are immeasurable.
Remarkable technical features of SPR sewage treatment system;
1. The mixing of municipal domestic sewage and treatment chemicals is mainly completed under the joint action of the drug suction pipe in front of the pump, the impeller of the sewage pump, the serpentine reaction pipe and the ceramic ball reaction tank. According to the design of turbulent velocity, mixing time and hydraulic structure data, the mixture can be fully mixed, which creates a prerequisite for obtaining the best coagulation purification effect and saving chemicals to the greatest extent. This is impossible for conventional hydraulic structures with primary treatment and secondary treatment in the past.
2. When the 2.SPR system is used to treat urban sewage, more than five kinds of sewage treatment agents and their best formula are used in combination, and the organic pollutants, heavy metal ions and harmful salts dissolved in sewage are separated from the water through chemical reactions and become tiny particles with solid interfaces (it includes the function of tertiary treatment of sewage). Among them, an adsorbent with good adsorption effect and low price was selected to adsorb organic pollutants and chromaticity. Disinfectant can kill bacteria and Escherichia coli within 30 minutes. Suspended solids and various impurities condense into large and dense flocs through physical and chemical adsorption of coagulation. In this way, the way of using drugs to exert their independent functions and the cross-linking between them are different from the conventional physical and chemical methods. Moreover, the combined medicament formula used in the SPR system can only play a full role in the SPR sewage purifier and its system with very fine hydrodynamic parameters design, but it can not be used in the conventional hydraulic system.