One, JRW-A device can be buried below the surface characteristics 1. 2. 3. No sludge produced no effect on the surrounding environment 4. automatic control, no personnel management 5. simple operation, easy maintenance 6. craft new effect 7. Two good long life, JRW-A processes, structure Figure III, JRW-A flow chart 1. Adjust the pool (not in the device) 2. submersible pumps (two sets with a prepared one) 3. First Shen 4. The three contact oxidation pond pool 5. secondary settling tank (two parallel operation) 6. pool disinfection disinfection device 7. 8. 9. sludge tank 10. The blower fan room (two sets of alternating operation) four, JRW-A Equipment Process Description ??? JRW-A device designed primarily for domestic sewage and similar industrial organic wastewater treatment, its main processing means is the use of more mature biochemical process technology - biological contact oxidation, water quality parameters according to general sewage water quality design calculations, according to BOD5 average 200mg / l, the effluent BOD5 by 20mg / l design. There are six parts: 1. First contact oxidation pond clarifier 2. 3. 4. disinfectant pool secondary settling tank, sludge tank disinfection unit 5. 6. Fan Room, fan. Respectively, are discussed below: 1. Initial sedimentation tank: First the device settling tank for Kennedy flow sedimentation, sewage rising velocity sedimentation of 0.6-0.7 mm / sec, sludge settling down to a sludge tank with air lift . (Note: JRW-A0.5-5m3 / h with no primary sedimentation tank) ??? primary settling tank can be removed in wastewater sediments and floating debris. Waste water after heavy early, about 50% can be removed sediments, oils and floats, 20% BOD, according to the removal of BOD or solids per unit mass basis, primary sedimentation tank purification step is the most economically savings for life sewage and industrial effluent suspended solids higher are easy to adopt primary settling tank pretreatment. The main role of the primary settling tank below. (1) removal of sediments and floating debris can relieve the load subsequent processing facilities. (2) so that the fine solid particles into larger flocs, and strengthen the solid-liquid separation. (3) adsorption of colloidal substances to remove a certain role. (4) To some extent, the primary settling tank can play a role in regulating the pool, play a certain extent on the quality of the homogenizing effect. Mitigate the impact of changes in water quality subsequent biochemical system. ??? Some wastewater treatment system will be part of the secondary settling tank sludge return to the primary settling tank, play bioflocculation secondary settling tank sludge can adsorb more soluble and colloidal organic matter to improve the primary settling tank removal efficiency. In addition, also in the primary settling tank before adding iron coagulant, strengthen phosphorus removal. After the beginning of the iron-containing sludge settling tank sludge into the digestive system, but also improve the activity of methanogenic bacteria, reduce the content of biogas sulfide, thus can increase biogas production, and save gas desulfurization costs. The main factors that affect the settling tank to run early (1) surface load surface load increases, can affect the effective settlement of suspended solids, so the removal of suspended solids fall, hydraulic loading rate and generally 0.6 ~ 1.2m3 / (m2? H) is appropriate . (2) Wastewater nature: the freshness of fresh sewage sedimentation higher removal, wastewater freshness turn depends on the length of the pumping station series sewers, etc., in addition to a high concentration of industrial wastewater hypoxia easy to spoilage. Solids particle size, shape and density of the wastewater solids tablets, regular shape, the relative density of large and rapid sedimentation. Temperature water temperature decreases, increasing the viscosity of the suspended solids in water, such as suspended solids settling faster 50% 10 ℃ 27 ℃ than at the time. However, high water temperature will accelerate corruption wastewater, anaerobic fermentation, the density difference between the liquid is reduced, is not conducive to sinking particles, thereby reducing the settling characteristics of suspended solids. Therefore, these two factors should be integrated and combined sewage management system specific situation analyzed together. (3) operating factors such as operating conditions before the procedure grill well or sand pools can directly affect the operation of the primary settling tank. If the procedure runs before bad will increase the load on the primary settling tank and reduce removal. In the secondary settling tank sludge and sludge digestion tank digested sludge into the primary settling tank of the treatment system, special attention should sludge uniform and stable access. Avoid gap, the impact dosing, otherwise it would overload the primary settling tank run, corruption has greatly increased the number of sludge, affecting the removal of solids, and adversely affect the environment. 2. The contact oxidation pond: artesian water after primary sedimentation tank for biological treatment to the contact, the contact tank is divided into three, the total residence time of more than four hours, enhanced equipment contact oxidation time up to 6 hours, packing filler for novel trapezoid easy conjunctiva, non-blocking, packing specific surface area of ??160m2 / m3, contact tank gas-water ratio of 12: 1 or so. (Note: JRW-A0.5-5m3 / h contact pool for two) 3. secondary settling tank: biological wastewater flows after secondary settling tank, secondary sedimentation tank into two vertical flow sedimentation tank only parallel operation, increased flow rate of 0.3-0.4 mm / sec, mud raised to the sludge tank using air. (Note JRW-A0.5-5m3 / h gravity sludge to sludge pool) 4. pool disinfection and sterilization equipment: pool disinfection according to specifications: "TJ14-74" standard for 30 minutes, using solid chlorine tablets dissolve in contact disinfection, sterilization and disinfection equipment pool according to the size of the water changing the dosage, to be more drug and more water, less water and less dosing purposes, other devices may need to be formulated separately. (Note: If used for industrial wastewater, pool disinfection and sterilization devices may not) 5. sludge pools: primary sedimentation tank, secondary settling tank sludge were all put to use air tanks JRW-A of sludge aerobic digestion sludge pond supernatant plus stream to contact oxidation pool reprocessing, digested sludge rarely, usually 1-2 years to clean up once and clean-up methods available suction truck inspection hole stretching from sewage sludge pool After the bottom of the basins, suction Sinotrans can. (JRW-A0.5-5m3 / h sludge anaerobic digestion) 6. Fan Room, Fan: Fan Room Equipment JRW-A is located at the top of the pool disinfection, fan room on imports of double glazed, air inlet muffler , fan filter, so no noise at runtime. Fan with two sets of L-type blower, can automatically run alternately, a single wind turbine operating life of about 30,000 hours.