Rotary Drum Screen OA1

OA1 Micro Strainer

Rotary Drum Screen

Filter gap 6~11 mm

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OA1 Micro Strainer

Introduction

Rotary Drum Screen OA1 Micro Strainer is one of the complete equipment products for water supply and drainage pretreatment.This equipment is widely used in sewage treatment projects such as urban sewage, industrial water, food processing industry, and paper industry. Cleaning, reliable and effective mechanical solid-liquid separation.

Built-in waste crushing

Configure grid waste washing

Compact design

High Separation Efficiency

All stainless steel

Low maintenance workload

Application Areas

Municipal Sewage Treatment

Industrial Sewage Treatment

Food Processing Industry Sewage Treatment

Paper Making Sewage Treatment

Technical Advantages

Low-head Loss | High Separation Efficiency

The shape of the grid basket and the installation angle of 35° make the filtering area much larger than the vertical or large-angle grid, so the low-head is minor., the separation efficiency is high, and the processing capacity is large.

All stainless steel

The machine is made of stainless steel and treated with acid passivation to prevent corrosion and to reduce maintenance work.

Reliable mandatory self-cleaning

Through the rotary waste cleaning, the entire filtering area will be thoroughly cleaned, and even under high pollution conditions, this mandatory cleaning can ensure an effective filtering area. In addition, it will also ensure that the grid waste will continue to be intercepted in the grid basket (before the filtering area), that is, the grid waste will not fall through the grid gap into the effluent stream during the cleaning process.

Multifunctional in one system

The OA1 series grille has grid waste filtration, transfer, flushing and dewatering functions in a single compact unit. Additional closures ensure that no odor escapes during operation of the entire unit.

Outdoor installation

Outdoor installation of OA1 series grille can be equipped with anti-freeze protection device, and additional isolation measures can be added if necessary.

Refurbishment

The design of the OA1 series grille allows for subsequent improvements and configuration updates if necessary. Both the Screening device and the integrated grid cleaning system can be configured later.

Low maintenance workload

No lubrication is required, just regular inspection.

Structure Principle

The equipment is installed at an angle of 35 degrees in a channel or a tank. Sewage flows into the basket drum, scum and suspended matters are intercepted accordingly.

When the water level before and after the grid reaches a determined difference in level, the waste scraping arm, fixed on the central axis, starts to rotate for cleaning.

The scraper brushes penetrates into the grid orifices, thoroughly clean the basket, removes the waste and transfer it via a screw conveyor to discharge it into a bin. The brushes are automatically cleaned during the drum rotation.

Specifications

* Model description

OA1 Micro Strainer			OA1- Rake + Rinse Grid Filter
Model			OA1-800	OA1-1000	OA1-1200	OA1-1400	OA1-1600	OA1-1800	OA1-2000
Equipment width B(mm）			780	1000	1200	1400	1600	1800	2000
Channel width B1(mm）			800	1020	1220	1440	1640	1840	2040
Design channel depth H(mm）			695	815	920	1080	1220	1340	1490
Unloading height H1(mm）			800
Installation angle α(°）			35
Minimum total length L(mm)			3200	3400	3600	4200	4400	4600	5800
Rotation speed N(r/min）			≈6
Motor power(kw)			1.1		1.5				2.2
Maximum water depth in front of the grid H3(mm）			395	515	620	780	920	1040	1190
Cross grid velocity V(m/s）			0.8
Mesh gap B (mm）	6	Maximum water flow （L/S）	129	207	296	435	633	852	-
	8		136	217	311	456	665	860	995
	10		143	227	326	478	697	937	1202
Note: There is a coarse grille in the front, the amount of passing water can be × 110%, and the design flow rate ≤ the maximum flow rate × 85%

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Benenv Group

Benefit the Environment

Beneny Group has more than 10 subsidiaries, with total assets of morel than 80 million USD. Benenv has more than 60 national patents and a number of international certifications, such as ISO9001 international quality system certification, CE EU certification, Ecovadis certification, etc.

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