Method for treating sandstone wastewater
A technology for sand and waste water, applied in chemical instruments and methods, multi-stage water/sewage treatment, water/sludge/sewage treatment, etc. It can not be discharged in time and other problems to ensure long-term normal operation, reduce the probability of interaction, and reduce the effect of hardening.
Active Publication Date: 2012-05-02
CHINA HYDROELECTRIC ENGINEERING CONSULTING GROUP CHENGDU RESEARCH HYDROELECTRIC INVESTIGATION DESIGN AND INSTITUTE
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Problems solved by technology
The advection sedimentation tank with the above-mentioned structure has the following disadvantages in use: the above-mentioned sand and gravel discharge system is often blocked by sand and gravel, causing the sand and gravel in the advection sedimentation tank to not be discharged in time, affecting the normal use of the advection sedimentation tank, and even causing the entire waste water The treatment system is paralyzed, and every time the discharge system is cleaned, it needs to consume a lot of manpower and material resources, and the entire system used to treat wastewater needs to be stopped, which affects the normal progress of wastewater treatment and has a great impact on the environment
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[0018] Such as figure 1 As shown, the method for treating gravel waste water of the present invention comprises advection type settling tank 19, and described advection type settling tank 19 is provided with water outlet 11, is provided with mud discharge area at the bottom of advection type settling tank 19, so A plurality of mud hoppers are arranged in the mud discharge area, and the bottom of each mud hopper is connected with a sewage branch pipe, and the mud discharge area at the bottom of the advection sedimentation tank 19 is divided into coarse sand and gravel mud discharge areas according to the advection direction of the water in the advection sedimentation tank. District 12 and fine sand and stone mud discharge area 13, wherein, the width of advection type sedimentation tank 19 is 1m, along the advection direction of water, the length of described advection type sedimentation tank 19 is 9.9m, and the described coarse sand and gravel mud discharge area 12 and the rati...
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Abstract
The invention discloses a method for treating sandstone wastewater, which is favorable for preventing blockage of a horizontal flow type sedimentation tank sandstone discharge system. The method mainly comprises the following steps of: firstly, dividing a drainage region at the bottom of a horizontal flow type sedimentation tank into two drainage regions according to the horizontal flow direction of water in the horizontal flow type sedimentation tank in sequence; then, connecting respective sandstone discharge systems for the two drainage regions respectively; and then, discharging sandstones in the two drainage regions to the exterior of the horizontal flow type sedimentation tank through the respective sandstone discharge systems respectively. By using the method provided by the invention, occurrence of a hardening phenomenon can be effectively avoided, the blockage of the horizontal flow type sedimentation tank sandstone discharge system can be favorably avoided, and long-term stable operation of the horizontal flow type sedimentation tank is guaranteed.
Description
technical field [0001] The invention relates to a method for treating gravel wastewater applied in the field of hydropower construction. Background technique [0002] At present, in the field of hydropower construction, it is often necessary to treat wastewater containing a large amount of sand and gravel. The content of sand and gravel in this wastewater is generally 10,000 mg / L to 130,000 mg / L, and the particle size of sand and gravel is generally below 100 μm, especially concentrated in In the range of 50 μm to 100 μm, and in the range below 10 μm. Generally, an advection sedimentation tank is used for the initial treatment of this kind of wastewater. The pool shape of the advection sedimentation tank is generally rectangular. The wastewater flows in from one end of the pool, flows through the pool in the horizontal direction, and flows out from the other end of the pool. There is a mud discharge area at the bottom, and there are multiple mud hoppers in the mud discharge...
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IPC IPC(8): B01D21/02B01D21/24C02F9/04C02F1/52
Inventor 卢红伟李亚农谢光武蒋红郎建王小明陈明曦文典李桥苏利洪
Owner CHINA HYDROELECTRIC ENGINEERING CONSULTING GROUP CHENGDU RESEARCH HYDROELECTRIC INVESTIGATION DESIGN AND INSTITUTE