Wastewater Treatment Equipment Process

Due to a large population and rapid economic development, the city generates a significant amount of wastewater. In rural and town areas, with larger land areas but fewer people, the wastewater treatment capacity is limited. This is why the pig manure drum microfilter wet-dry separator is particularly welcomed for the emergence of domestic wastewater treatment equipment. This equipment not only improves the wastewater treatment efficiency but also reduces the labor burden. Let's take a look at its detailed process flow below.

1. Initial Sedimentation Tank: The equipment features a vertical flow sedimentation tank, with the wastewater rising velocity in the deep sedimentation tank at 0.6-0.7 mm/s. The settled sludge is then transferred to the sludge tank using air.

2. Contact Oxidation Tank: After primary sedimentation, the water flows to the contact tank for biochemical treatment. Equipped with Yantai roller microfiltration dryer-wet separator, the contact tank is divided into three stages with a total detention time of over 1 hour. The reinforced domestic wastewater treatment equipment has a contact oxidation time of up to 6 hours, using innovative packing material that is easy to form a biofilm and does not clog. The specific surface area of the packing material is 160 m2/m2, and the air-to-water ratio in the contact tank is approximately 12:1.

3. Secondary Sedimentation Tank: After biochemical treatment, the wastewater flows into the secondary sedimentation tank, which consists of two vertical flow sedimentation tanks, operating in parallel. The rising velocity is 0.3-0.4 mm/s. Sludge is transferred using air lift to the sludge pond.

4. Disinfection pools and their equipment; the disinfection time in the pool follows the "TJ14-74" standard at 30 minutes. For on-site sewage, the pool can be extended to 1-1.5 hours of detention time, utilizing solid chlorine tablets for contact dissolution disinfection. The disinfection device can continuously adjust the dosing amount based on the water output, achieving the purpose of more water, more dosing, and less water, less dosing. Other disinfection equipment can be arranged separately.

5. Sludge Pond: All sludge from the primary and secondary sedimentation ponds is aerated into the sludge pond of the WSZ-A for aerobic digestion. The clarified liquid from the sludge pond is recycled to the heat exchange oxidation pond for further treatment. The remaining sludge after digestion is minimal, typically requiring cleaning once every 1-2 years. The cleaning method involves using a vacuum truck to extend into the bottom of the sludge pond through the inspection hatch and suctioning out the sludge for disposal.

The main application of the screw conveyor

The primary application of the screw classifier:

The screw press is widely used in sludge dewatering systems across various industries, including municipal wastewater treatment, petrochemicals, leather and textiles, food breeding, and steel casting. It particularly excels in dealing with oily sludge and activated sludge, achieving a reasonable moisture content of 80% in sludge dewatering. Depending on the characteristics of the sludge, some can reach as low as 60% or even lower.

Advantages of the Screw Compactor:

1. Low Cost: Small-scale screw press machines cost only around $20,000 to $30,000, much cheaper than traditional mud presses, which can cost tens of thousands.

2. Continuous Operation: The machine can operate 24/7 with just the right parameter adjustments. The PLC system is set up according to specifications, ensuring the drum microfiltration wet-dry separator works efficiently, significantly reducing the need for manual labor.

3. High-quality product: The screw press is made entirely of 304 stainless steel, significantly enhancing its wear and durability, typically lasting for three to five years with minimal use.

4. Wide Application: Capable of handling sludge from almost all industries, particularly effective for activated sludge treatment.

Screw Press for Dewatering Not Drying Out

Reason:

1. Flocculation issue. Due to the unique operating principle of the screw press, the wastewater treated by the screw press must undergo preliminary feeding treatment. After the wastewater has flocculated and settled, it is then pumped into the equipment for dewatering. The compatibility of the feed material with the wastewater, the ratio of feed material addition, and the solubility of the feed material all affect the size of the flocs in the wastewater.

The floc balls are too small, which cannot meet the feeding requirements between the spiral blades, leading to insufficiently dried sludge; conversely, if the floc balls are too large, they will hold more moisture, reducing the dryness of the mud cakes.

2. Equipment tuning is insufficient. Regarding tuning: first, the coagulation effect of the wastewater needs to be adjusted, secondly, the speed frequency of the main shaft must be properly regulated, and thirdly, the gap size of the back pressure plate and the flow rate of the sludge and wastewater need to be fine-tuned. The technician will adjust the flow rate of the wastewater feed and the gap size of the back pressure plate based on the actual conditions such as the characteristics of the wastewater and the size of the flocs.

Solution:

1. Adjusting reagents is crucial. First, match the appropriate reagent based on your wastewater treatment characteristics. Then, adjust the dosage ratio according to the speed and size of the floc formation, ensuring the wastewater achieves an optimal flocculation state upon entering the reaction tank.

2. In addition to the feed material adjustment, the back pressure plate's adjustment is also crucial for the screw press. Therefore, after purchasing a screw press, it's important to have the technical staff perform the adjustment to achieve a better processing effect.

3. Helical Clip Sheets Warping and Deformation

Roller Microfiltration Dewatering Separator Manufacturer - Hengman Environmental Protection - The roller microfiltration dewatering separator in Yantai is provided by Dezhou Hengman Environmental Protection Technology Co., Ltd. Hengman Environmental Protection Technology Co., Ltd. adheres to the corporate philosophy of "people-oriented" and boasts a team of highly qualified employees. We strive to offer superior products and services to回馈 society, and warmly welcome both new and old customers to visit and do business with us, sincerely cooperate, and create a brighter future together. Hengman Environmental Protection - Your Trusted Friend, Company Address: Aotong Industrial Park, Economic and Technological Development Zone, Lingcheng District, Dezhou City, Shandong Province, Contact: Manager He.